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Recruiting

NCT Number: NCT07302685

The Taiwan OSA Study

We will prospectively recruit 7000 OSA patients referred to the sleep center or China Medical University Hospital between 2020 and 2027. Polysomnographic (PSG) study data, clinical features, and health data from the National Health Insurance Research Database will be linked. Endotypic traits will be determined by PSG study parameters. The associations between clinical features, endotypic traits, and health outcome will be examined. Some patients will be invited to receive lung function tests, blood serum tests, blood gas tests, and cognitive function tests.

Recruiting

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Key information

Conditions

Obstructive Sleep Apnea Apnea Dyssomnias Nervous System Diseases Respiration Disorders Respiratory Tract Diseases Sleep Apnea Syndromes Sleep Apnea, Obstructive Sleep Disorders, Intrinsic Sleep Wake Disorders

Age range

0 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

China Medical University Hospital

Taichung, Taiwan, 404

Location status: Recruiting

Location contact

Wan-Ju Cheng, Doctor

CONTACT

[email protected]

+1872 +886422052121

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • patients who are referred to China Medical University Hospital sleep center by physicians

Exclusion criteria

-Individuals unable to complete at least 6 hours of PSG examination

Treatment and study plan

Primary outcomes

  1. Health outcome

    Time frame: Within 20 years from the date of the PSG examination

    Registered diagnosis in the National Health Insurance Database

Secondary outcomes

  1. Sleep quality

    Time frame: Baseline

    Pittsburgh Sleep Quality Index (PSQI) ranges from 0 (better) to 21 (worse).

  2. Daytime sleepiness

    Time frame: Baseline

    Epworth Sleepiness Scale ranges from 0 (better) to 24 (worse)

  3. Sleep quality

    Time frame: Baseline

    Basic Nordic Sleep Questionnaire,a higher Basic Nordic Sleep Questionnaire score indicates worse outcomes

  4. Sleep quality

    Time frame: Baseline

    Munich Chronotype Questionnaire

Study contacts

Contact information is provided by the study sponsor or research team.

Wan-Ju Cheng, Doctor

CONTACT

[email protected]

+1872 +886422052121

Sponsors and collaborators

Lead sponsor

China Medical University Hospital

Other

Registry information

Official study title

Clinical Features of Obstructive Sleep Apnea Patients With Different Phenotypes

Acronym: TOSA

Important dates

Study start
2020
Primary completion
2032
Study completion
2032
First posted
Dec 24, 2025
Registry last updated
Dec 24, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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